@x3cutiex3 I don't know much about dealing with tampering of files. But when starting game with no new update, the game is not running the same verification process. So I don't see how the verification process checking the files before update stops the same malicious users from tampering the files again after update.
Anyway, my main point and assumption was, that the launcher updates could work better for most of us, who just play the game (with files only updated with the launcher). And keep the current way maybe for manual "repair" if something was corrupted (e.g. interrupted update, manual file deletion, ...) .